Anyone who believes that STEM education is purely about learning equations and diagrams does not get it.
STEM is about organizing ones thoughts for clarity, something "humanities" strives to do, and in trying, often misses the mark by a wide berth.
Science is about creating a hypothesis, devising a sensible test, and understanding the results fully, in complete context.
Technology is about organizing complex systems, the attributes of each piece, their interrelations, and understanding how to modify and improve the overall system. Whether it is a mechanical machine, a computer network, or a community of people, studying technology is studying organization. This is the same goal as sociology, but done better.
Math is about taking a complex problem, reducing it into component pieces, addressing each one properly, and combining the individual results back into an overarching conclusion, just as a well written essay would do.
The best engineers are humanities students. Not because they also took liberal arts classes in college, but because they understand that Engineering is far more than solving math problems.